Metallic yarn and fabric.



W. H. UNDERWOOD.

METALLIC YARN AND FABRIC.

APPLIUATION FILED NOV.12, 1910.

Patented Dec. 19, 1911.

Mama vwe nto c $5 114' 61mm, W

WALTER HUNNEWELL UNDEBWOOD, OF NEW YORK, N. Y.

METALLIC YARN AND FABRIC.

Specification of Letters Patent.

Patented Dec. 19, 1911.

Application filed November 12, 1910. Serial No. 682,004.

This invention relates to an improved yarn and fabric woven therefrom.

Theobject of the invention'is to make a yarn from metallic fiber and weave the metallic yarn into a fabric.

To these ends the invention consists of the improved yarn and fabric substantially as hereinafter fully described and claimed in this specification and shown in the acconipanying drawings, in which:

Fi ure 1 is a representation of a mass of meta lic fibers from which the yarn is spun; Fig. 2 is a representation of a piece of yarn made from a plurality of strands spun from metallic fibers; Fig. 3 is atransverse sectional view taken through a fabric woven from metallic yarn; Fig. 4 is 0. Ian viewof a portion of woven metallic fa ric; Fig. 5 is a'transverse sectional view of another form of fabric made from metallic-yarn.

I have discovered that fine metallic fiber cut or shredded from metal in the usual manner in which such material is made, or any metallic fiber having rough or serrated edges in contradistinction to smooth wires, may be spun into yarn. One form of metallic fiber suitable for spinning into a yarn is known commercially as metallic wool, and if made from steel this material is known as steel wool. The fibers of such metallic wool are ordinarily more or less irregular in cross section and the edges are serrated or roughened in the nature of wool or hair, making it possible to spin the fibers into yarn.

Fig. 1 represents amass of metallic wool from which my metallic yarn may he spun, and Fig. 2 represents a com ound yarn A, comprising in this instance t ree strands B, each of which is made from three primary strands O of metallic yarn.

.Fig. 3 represents a sectional view of a fabric woven from arns D and E, and it is to be understoo that the fabric may either be woven from single strands of yarn or a plurality of strands twisted, as desired.

.E an

Fig. 4 is a plan view of Fig. 3 showing a sim l5 woven fabric comprising the yarns Fig. 5 is a transverse sectional view of a fabric woven from compound yarns F and G. The metallic wool with which I work may also be termed shredded metallic material, or if made from steel the material may: be termed shredded steel. The metallic fiber may first be annealed to make it soft and pliable and then spun into yarn, and after the yarn is spun or. made into fabric itmay be ardened, or hardened and then tempered.

The metallic yarn and fabric are useful for many purposes in the arts and manufactures, for instance, when embedded in plastic material, they add very greatly to its strength and wearin qualities. The metallic fabric embedde in or combined with rubber or similar material is useful or floor coverings, stair treads, packing for joints, and treads for solid and pneumatic vehicle tires. When combined with suitable material the metallic fabric makes excellent surfaces for vehicle brakes, clutchesand other devices requiring frictional contacting surfaces. The yarn and fabric ma made of any desired metal and when ma e of steel or other metals which permit of hardening may be tempered to any desired degree of hardness.

The yarn'may be span from the metallic wool by cardirig the same, or the wool may be obtained in such form that carding 1S unnecessary. The yarn when spun may be used as it comes from the spinning machine or it may bedrawn or com ressed in any suitable manner to increase t 1e density and smoothen the surface to facilitatethe weaving. If desired the metallic wool may be spun or twisted together with cotton or other fiber to make a compound yarn or thread. This yarn possesses the peculiar electrical property of varying its resistance wh n the yarn is agitated, or when placed undo; compression, tension or torsion, due, probably to variation in the extent of contacting surfaces of the fibers.

I claim and desire to obtain by Letters Patent the followingi 1. The improved yarn substantially as described span from out metallic fiber.

2. The improved yarn substantially as described spun from metallic fiber having serrated edges.

3. The improved yarnsubstantially as described spun from metallic wool.

4. The improved yarn substantially as described spun from steel wool.

5. The improved arn substantially as described spun from s redded steel.

6. The improved yarn substantially as de scribed spun from shredded metallic material. Z

7. The improved yarn substantially as desictribed spun from annealed cut metallic 8. The improved yarn substantially as described spun from annealed metallic fiber having serrated edges.

9. The improved yarn substantially as described spun from annealed metallic wool.

10. The improved yarn substantially as described spun from annealed steel wool.

11. The improved yarn substantially as described spun from annealed shredded steel.

12. The improved yarn substantially as described spun from annealed shredded metallic material.

13. The improved tem ened metallic yarn substantially as described spun from cut metallic fiber.

14. The improved tempered metallic yarn substantially as described spun from metallic fiber having serrated edges.

15. The improved tempered metallic yarn substantially as described spun from me-. tallic wool.

- 16. The improved tempered metallic yarn substantially as described spun from steel 5 wool.

17. The'improved tem ered metallic yarn substantially as describ ded steel,

18. Theimproved tem ered metallic yarn substantiallyas described spun from shredded metallic material.

19. The improved hardened metallic yarn substantially as described spun from out metallic fiber.

20. The improved hardened metallic yarn substantially as described s un from metallic fiber having serrated e gee.

21. As an article of manufacture, the improved fabric woven from yarn spun from out metallic fibers. i

22. As an article of manufacture, the inispun from shredproved fabric woven from yarn spun from metallic fibers'having serrated edges.

23. As an article of manufacture, the im-v proved fabric woven from yarn spun from metallic wool.

24. As an article of manufacture, the improved fabric woven from yarn spun from steel wool.

25. As an article of manufacture, the improved fabric woven from yarn spun from shredded steel. 26. As an article of manufacture, theimproved fabric woven from yarn spun from shredded metallic material. V

In testimony whereof I have signed this specificationin the presence of two subscrib ing witnesses.

WALTER HUNNEWELL UNDERWOGD.

Witnesses:

K.-G. LEARD, M. M. Rmmnm. 

